IAQ and CFD study on the ventilation system in a chassis dynamometer room

The chassis dynamometer room is one of many extensions in the automotive laboratory, UTHM, which is one of a few dynamometer rooms available in Malaysia. Consequently, it becomes highlighted facility to do tests and researches with respect to vehicle components such as the braking, cooling, and electrical systems. The major application however is to evaluate engine performance. Ventilation system is an essential system to reduce the air pollution, thus maintain acceptable indoor air quality (IAQ) in any chassis dynamometer room. Currently, the room depends on two types of ventilation: natural ventilation through two windows and a door, enhanced with mechanical ventilation which is an exhaust fan placed on the top of the room. Unfortunately, the existing ventilation system is not sufficient to support activities conducted in the room as was proven in the IAQ study. Therefore in the current study, results of a computational fluid dynamics (CFD) for air flow and thermal distribution in the tested room are presented. CFD results expose the weaknesses of the existing system. Thus, a much better air flow structure and thermal distribution as required shall be provided by the installation of a new improved ventilation design as proposed in this study

Analysis of the three dimensional heat conduction in nano- or microscale

The Dual-Phase-Lagging (DPL) equation is formulated as an abstract differential equation. In the absence of a heat source term the DPL equation with homogeneous boundary conditions generates a contraction semigroup. The exact expression of the semigroup is achieved. It is proved that the associated eigenfunctions form a Riesz basis. The stability of semigroup is proved. Moreover, it is also shown that the spectrum of DPL equation contains an interval. This implies that the infinitesimal generator associated to the DPL equation is not a Riesz spectral operator. Therefore, the known test for approximate controllability cannot be used. Several controllability properties are investigated

Hattat Kamil Akdik'le bir mülakat

Taha Toros Arşivi, Dosya No: 19-Akdik, Kamil-Şeref-Muhittin-SaraUnutma İstanbul projesi İstanbul Kalkınma Ajansı'nın 2016 yılı "Yenilikçi ve Yaratıcı İstanbul Mali Destek Programı" kapsamında desteklenmiştir. Proje No: TR10/16/YNY/010

İbnülemin Mahmut Kemal Bey'in geceleri

Taha Toros Arşivi, Dosya Adı: İbnülemin Mahmut Kemal İnal. Not: Derginin "İcranın Dili" köşesinde yayımlanmıştır.İstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Optimal control solution for Pennes' equation using strongly continuous semigroup

summary:A distributed optimal control problem on and inside a homogeneous skin tissue is solved subject to Pennes' equation with Dirichlet boundary condition at one end and Rubin condition at the other end. The point heating power induced by conducting heating probe inserted at the tumour site as an unknown control function at specific depth inside biological body is preassigned. Corresponding pseudo-port Hamiltonian system is proposed. Moreover, it is proved that bioheat transfer equation forms a contraction and dissipative system. Mild solution for bioheat transfer equation and its adjoint problem are proposed. Controllability and exponentially stability for the related system is proved. The optimal control problem is solved using strongly continuous semigroup solution and time discretization. Mathematical simulations for a thermal therapy in the presence of point heating power are presented to investigate efficiency of the proposed technique

Optimal boundary control for hyperdiffusion equation

summary:In this paper, we consider the solution of optimal control problem for hyperdiffusion equation involving boundary function of continuous time variable in its cost function. A specific direct approach based on infinite series of Fourier expansion in space and temporal integration by parts for analytical solution is proposed to solve optimal boundary control for hyperdiffusion equation. The time domain is divided into number of finite subdomains and optimal function is estimated at each subdomain to obtain desired state with minimum energy. Proposed method has high flexibility so that decision makers are able to trace optimal control in a prescribed subinterval. The implementation of the theory is presented and the effectiveness of the boundary control is investigated by some numerical examples

Islamic Religious expressions in the Translation of Naguib Mahfouz Novel “The Beginning and the End”

Religion is a source from which people gain their behaviors. It usually provides guidelines and advice about good and evil. It also teaches us about acceptable and unacceptable forms of behavior. Religious language is never meaningless, so long as the interlocutors understand the information and concepts behind what they are communicating on. The value of any religious concept is based on its pragmatic value of the proponent. This paper intends to investigate the challenges involved in translating Islamic religious expressions expressions in the translation of Naguib Mahfouz novel “The Beginning and the End” (??????? ????????). Furthermore, this paper aims at investigating the strategies (paraphrasing, transliteration, annotation, etc) the translator opted for in translating and handling problems involved in conveying religious associations from Arabic into English. Finally, gains and losses made in the translation will be pointed out. Key Words: Translation, Religious, Expressions, Arabic, Englis

ANALYTICAL AND EXPERIMENTAL VIBRATION ANALYSIS OF TELESCOPIC PLATFORMS

In this study, vibration analysis of a telescopic platform is conducted, and the platform structure is reconstructed to satisfy vibrational standards. The analysis is realised using solid modelling, finite elements and an analytical method. The results are verified using experimental modal techniques. Through the finite element and experimental modal approach free vibration analysis is carried out and natural frequencies are determined. Additionally, vibration accelerations of the structure are obtained by forced vibration analysis of the model. All calculations one performed on the new reconstructed structure, and it is determined whether the reconstructed structure satisfies the vibrational standards